I did it to my sedan, I can't find the post I got the info. from now. THIS isn't it, but might help you. I don't know about the rear window, my wagon already had been changed before I got it.
http://forums.amceaglesden.com/index.php?topic=43201.msg336282#msg336282
FOUND IT!!! I was on Doug's Eagle Companion page on spacebook when I did mine!!! Here's the info. I got. From what I recall, you order the arms from one place & the blades from another. The blades are kinda small in my opinion, you COULD just order the arms & then go to where ever you want for blades in the right size.
You can replace the wiper arms with 89 Jeep wiper Cherokee arms. And use improved blades https://www.amazon.com/Dorman-42591-HELP-Wiper-Arm/dp/B000C5G5CU/ref=asc_df_B000C5G5CU/?tag=hyprod-20&linkCode=df0&hvadid=312684231807&hvpos=&hvnetw=g&hvrand=2020033214677942281&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9024252&hvtargid=pla-569462848510&psc=1&tag=&ref=&adgrpid=60983009663&hvpone=&hvptwo=&hvadid=312684231807&hvpos=&hvnetw=g&hvrand=2020033214677942281&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9024252&hvtargid=pla-569462848510